Bicycle chainguard



FIG. 1 is an enlarged front and right side perspective view of the bicycle chainguard showing our new design, the broken lines are shown for illustrative purposes only and form no part of the clained design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a front elevational edge view thereof; and,

FIG. 7 is a rear elevational view thereof. 

The ornamental design for a bicycle chainguard, as shown and described. 